Drill bit SDS‑Plus DeWalt DT9523 6.5 x 310/250 mm

The DeWalt SDS‑Plus drill bit DT9523 is a 6.5 mm masonry bit with an overall length of 310 mm and a working length of 250 mm. It is made for SDS‑Plus rotary hammers and intended for drilling in concrete, brick, block and similar materials. The bit features a reduced shank for secure seating in the tool chuck and is sized for medium‑depth anchor and through‑hole drilling common in construction and installation work.

Advantages

The drill bit provides consistent drilling performance in dense masonry thanks to its SDS‑Plus shank design that ensures efficient impact transmission and quick bit changes. Its 6.5 mm diameter and 250 mm effective length balance reach and control for accurate anchor holes and pass‑through drilling. The reduced shank improves engagement in chucks designed for SDS‑Plus accessories, reducing wobble and increasing drilling precision.

Suitable for

• Drilling anchor holes in concrete and reinforced concrete
• Through‑hole drilling for conduit and pipe installation
• Masonry work in brick, block and stone
• Installation and construction tasks requiring medium‑depth holes

Key specifications

• Diameter: 6.5 mm
• Overall length: 310 mm
• Working (effective) length: 250 mm
• Shank type: SDS‑Plus reduced shank for rotary hammers
• Material application: concrete, brick, block and similar masonry

How to use

Fit the SDS‑Plus shank securely into the rotary hammer chuck until it locks. Select hammer drilling mode on the tool and apply steady axial pressure while allowing the tool to do the work; avoid excessive side load. For reinforced concrete use gradual feed and, if necessary, withdraw the bit periodically to clear debris. When drilling through tiles or finishing surfaces, start at low speed to prevent chipping, then proceed at normal hammer speed once the bit is engaged in the substrate.

Usage recommendations

Use appropriate personal protective equipment including safety glasses, hearing protection and dust mask. Match the drill bit diameter and working length to the anchor or fastener specification and the material thickness. For prolonged use, periodically withdraw the bit to clear dust and prevent overheating; replace the bit when wear reduces cutting efficiency or causes excessive wander.